Product Made in Japan
Manufacturer: NFK
Model: NK-10000

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

U-shaped bellows (Round corner type)

Amount of expansion / contraction

Bellows Material	H	50	75	100
	t
Various SUS	1.0	13.5mm	–	–
	1.2	11.5mm	–	–
	1.5	–	20mm	32mm
	2.0	–	–	27mm
Esten	1.6	–	18mm	30mm
	2.3	–	13mm	21mm
Pitch		50	70	80
Maximum number of Convolution		6	5	4

※Expansion / contraction amount per Convolution

U-shaped bellows(Single corner type)

Amount of expansion / contraction

H	50	75	100
t
1.2	11.5mm	25.6mm	40mm
1.5	9.2mm	20.6mm	36mm
Pitch	50	75	100
Maximum number of Convolution	3	3	3

※Expansion / contraction amount per Convolution

Bellows Material

SUS304, 316, 316L, 310S, 321, Hastelloy, Inconel, Esten

V-shaped bellows(Camera corner type)

Amount of expansion / contraction

H	50	75	100	125
t
0.8	12mm	–	–	–
1.0	9mm	22mm	30mm	36mm
1.2	8mm	18mm	30mm	36mm
1.5	6mm	14mm	26mm	36mm
2.0	4mm	11mm	19mm	30mm
Pitch	20	30	35	40
Maximum number of Convolution	10	8	6	4

※Expansion / contraction amount per Convolution

Bellows Material

SUS304, 316, 316L, 310S, 321, Hastelloy, Inconel, Esten